CN110185458B - Bidirectional shield launching method - Google Patents
Bidirectional shield launching method Download PDFInfo
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- CN110185458B CN110185458B CN201910603282.7A CN201910603282A CN110185458B CN 110185458 B CN110185458 B CN 110185458B CN 201910603282 A CN201910603282 A CN 201910603282A CN 110185458 B CN110185458 B CN 110185458B
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- shield segment
- left line
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- line shield
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
Abstract
The invention provides a bidirectional shield launching method, and belongs to the technical field of shield construction. The bidirectional shield starting method comprises the steps of hoisting a first left line shield segment down to a starting well, and starting tunneling towards the left line direction to form a left line starting interval; the second left line shield segment is hoisted downwards to a left line starting section and is connected with the first left line shield segment in an installing mode to form a left line shield machine; the left line shield machine tunnels towards the left line direction to form a left line tunneling section; the first right line shield segment and the second right line shield segment are hoisted downwards to the left line tunneling section; the first right shield segment starts to tunnel towards the right direction to form a right starting section; and moving the second right line shield segment into the right line starting interval, and installing and connecting the second right line shield segment with the first right line shield segment to form a right line shield tunneling machine to tunnel towards the right line direction. The bidirectional shield launching method can carry out bidirectional launching of two shield machines in the same narrow launching well, and improves the continuity and the shield efficiency of the bidirectional shield.
Description
Technical Field
The invention relates to the technical field of shield construction, in particular to a bidirectional shield starting method.
Background
With the increasingly saturated urban development in China, the demand for underground space development is increasing. The shield construction is more and more common in the underground space development, but as the urban structure is more and more dense and the construction sites available in the city are less and less, the size of the starting well is limited when the shield construction is carried out, so that the length of the shield machine is several times longer than that of the starting well, the starting operation is difficult to carry out, and when one shield well undertakes the bidirectional starting task, the shield machine with longer length is more difficult to carry out the starting operation on the starting well with smaller size. At present, two shield machines are started in the same starting well in a two-way mode, the starting operation is usually carried out by using a large-size starting well, two shield machines cannot be started in the same narrow starting well (the size of the starting well is far smaller than that of the shield machines), and the continuity and the safety of the construction operation are difficult to guarantee.
Disclosure of Invention
The invention aims to provide a bidirectional shield launching method, which can carry out bidirectional launching of two shield machines in the same narrow launching well and improve the continuity and the shield efficiency of a bidirectional shield.
The embodiment of the invention is realized by the following steps:
the embodiment of the invention provides a bidirectional shield launching method, which comprises the following steps: the first left line shield is lifted into an originating well in a segmented mode, and tunneling starts towards the left line direction to form a left line originating interval; the second left line shield segment is hoisted downwards to a left line starting section and is connected with the first left line shield segment in an installing mode to form a left line shield machine; the left line shield machine tunnels towards the left line direction to form a left line tunneling section; when the length of the left line tunneling section is greater than or equal to the total length of the first right line shield segment and the second right line shield segment, the first right line shield segment and the second right line shield segment are lifted downwards into the left line tunneling section; the first right shield segment starts to tunnel towards the right direction to form a right starting section; moving the second right line shield segment into a right line starting interval, and installing and connecting the second right line shield segment with the first right line shield segment to form a right line shield tunneling machine to tunnel towards the right line direction; the tail end of the first left line shield segment is connected with the head end of the second left line shield segment through a connecting pipeline; the tail end of the first right line shield segment is connected with the head end of the second right line shield segment through a connecting pipeline; the first left line shield segment and the first right line shield segment both use the shield body as the head end.
Optionally, the second left line shield segment comprises a plurality of segments connected to each other in series by connecting lines; the second left line shield segment is hoisted downwards to a left line starting section and is connected with the first left line shield segment in an installing mode to form a left line shield machine, and the left line shield machine comprises: and when all the sections of the second left line shield section are lifted downwards to the left line starting section, the first left line shield section and the second left line shield section form a left line shield machine.
Optionally, the second right-line shield segment comprises a plurality of segments connected to each other in series by connecting lines; moving the second right shield segment into the right originating section, and connecting the second right shield segment with the first right shield segment to form a right shield tunneling machine which tunnels towards the right direction, wherein the right shield tunneling machine comprises: and when all the sections of the second right line shield segment move into the right line starting interval, the first right line shield segment and the second right line shield segment form a right line shield machine.
Optionally, the step of hoisting the second left line shield segment down to the left line starting section and installing and connecting the second left line shield segment with the first left line shield segment to form the left line shield machine includes: and sequentially hanging the trolleys of the second left line shield segment from the head end to the tail end of the second left line shield segment to the starting well, moving the trolleys into a left line starting interval, and sequentially connecting the trolleys of the first left line shield segment and the second left line shield segment in series to form the left line shield machine.
Optionally, the step of hoisting the first right-line shield segment and the second right-line shield segment into the left-line excavation area includes: and sequentially and downwards hanging the trolleys and the shield bodies of the second left line shield segment and the first left line shield segment from the tail end of the second right line shield segment to the shield body of the first right line shield segment, and moving the trolleys and the shield bodies into the left line tunneling section.
Optionally, before the first left line shield segment is hoisted down into the originating well and excavation is initiated to the left line direction to form a left line originating zone, the method further comprises: an origination station is located at the bottom of the origination well.
Optionally, the hoisting the first left line shield segment down into the starting well, and starting the excavation to the left line direction to form a left line starting interval includes: arranging a left line steel sleeve on a well wall of the starting well, which is in contact with a shield body of the first left line shield segment; the first left line shield is lifted to the starting well in a segmented mode and moved into a left line steel sleeve; the first left line shield segment starts tunneling towards the left line direction to form a left line starting section.
Optionally, before the second left-line shield segment is hoisted downwards to the left-line starting section and is installed and connected with the first left-line shield segment to form the left-line shield machine, the method further comprises: and (5) dismantling the steel sleeve of the left wire.
Optionally, the step of hoisting the first right-line shield segment and the second right-line shield segment into the left-line excavation area includes: arranging a right-line steel sleeve on a well wall of the starting well, which is in contact with the shield body of the first right-line shield segment; and hoisting the first right line shield segment and the second right line shield segment downwards into the left line tunneling section, and moving the first right line shield segment into the right line steel sleeve.
Optionally, before moving the second right-line shield segment into the right-line starting section and connecting it with the first right-line shield segment in an installing manner to form a right-line shield machine for tunneling in the right-line direction, the method further includes: and (5) removing the right wire steel sleeve.
The embodiment of the invention has the beneficial effects that:
the bidirectional shield starting method provided by the embodiment of the invention comprises the steps of firstly, hoisting a first left line shield segment downwards into a starting well, and starting and tunneling the first left line shield segment towards the left line direction. When the first left line shield segment starts to tunnel to form a certain left line starting section, the second left line shield segment is lifted downwards to the left line starting section to be connected with the first left line shield segment in an installing mode to form a left line shield machine, at the moment, the shield starting in the left line direction is finished, and the shield tunneling can be normally carried out. And when the left line shield machine tunnels for a length towards the left line direction to form a left line tunneling section, the first right line shield segment and the second right line shield segment are lifted downwards into the left line tunneling section. And then, starting tunneling in the right direction by utilizing the first right shield segment, and after the first right shield segment starts tunneling to form a certain right starting interval, moving the second right shield segment into the right starting interval to be connected with the first right shield segment in an installing manner to form a right shield machine, thereby completing the bidirectional shield starting in the unified narrow starting well. The first left line shield segment and the second left line shield segment are connected through a connecting pipeline, the first left line shield segment and the second left line shield segment can be connected to form a left line shield machine without installation through the connecting pipeline, and when a certain distance exists between the first left line shield segment and the second left line shield segment, the second left line shield machine can provide energy and material supply and other functional matching for the first left line shield segment through the connecting pipeline, so that the first left line shield segment can independently enter a small-size originating well to conduct originating tunneling in the left line direction. Similarly, the first right line shield segment and the second right line shield segment are connected through a connecting pipeline, so that the first right line shield segment can independently perform starting tunneling in the right line direction, and the situation that waste materials and the like generated by left line tunneling and right line tunneling cannot be transported out of a starting well due to the fact that the starting well is blocked by the second right line shield segment is avoided. By using the method, the bidirectional shield launching can be realized in the same narrow launching well, so that the continuity and the shield efficiency of the bidirectional shield are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic flow chart of a bidirectional shield launching method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a bidirectional shield launching method according to an embodiment of the present invention;
fig. 3 is a second schematic structural diagram of a bidirectional shield launching method according to an embodiment of the present invention;
fig. 4 is a third schematic structural diagram of a bidirectional shield launching method according to an embodiment of the present invention;
fig. 5 is a fourth schematic structural diagram of a bidirectional shield launching method according to an embodiment of the present invention;
fig. 6 is a fifth schematic structural diagram of a bidirectional shield launching method according to an embodiment of the present invention;
fig. 7 is a sixth schematic structural diagram of a bidirectional shield launching method according to an embodiment of the present invention;
fig. 8 is a seventh schematic structural diagram of a bidirectional shield launching method according to an embodiment of the present invention.
Icon: 200-left line shield machine; 210-a first left line shield segment; 220-second left line shield segment; 300-right shield machine; 310-a first right shield segment; 320-a second right shield segment; 400-connecting lines; 410-originating well; 420-origination station; 430-left wire steel sleeve; 440-reaction frame; 450-right wire steel sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An embodiment of the present invention provides a bidirectional shield launching method, as shown in fig. 1, including:
step 110: the first left line shield segment 210 is hoisted downwards into the originating well 410, and tunneling is initiated towards the left line direction, so as to form a left line originating section (shown in combination with fig. 2 and 3);
step 120: the second left line shield segment 220 is lifted downwards to the left line starting section and is installed and connected with the first left line shield segment 210 to form a left line shield machine 200 (shown in combination with fig. 4);
step 130: the left line shield machine 200 tunnels towards the left line direction to form a left line tunneling section (shown in combination with fig. 5);
step 140: when the length of the left line driving section is greater than or equal to the total length of the first right line shield segment 310 and the second right line shield segment 320, the first right line shield segment 310 and the second right line shield segment 320 are hoisted downwards into the left line driving section (shown in combination with fig. 6);
step 150: the first right shield segment 310 starts tunneling to the right direction to form a right start section (shown in connection with fig. 7);
step 160: moving the second right shield segment 320 into the right originating section, and connecting the second right shield segment with the first right shield segment 310 to form a right shield machine 300 for driving in the right direction (see fig. 8);
wherein, the tail end of the first left line shield segment 210 and the head end of the second left line shield segment 220 are connected through a connecting pipeline 400; the tail end of the first right shield segment 310 and the head end of the second right shield segment 320 are connected by a connecting pipeline 400; the first left line shield segment 210 and the first right line shield segment 310 both start with the shield body.
Generally, the left line shield machine 200 and the right line shield machine 300 adopt shield machines with the same specification, and before the implementation of the method, the left line shield machine 200 and the right line shield machine 300 are generally respectively split to form a first left line shield section 210 and a second left line shield section 220 which are connected through a connecting pipeline 400, and a first right line shield section 310 and a second right line shield section 320 which are connected through the connecting pipeline 400. When the left-line shield machine 200 and the right-line shield machine 300 are split, the split first left-line shield section 210 and the split first right-line shield section 310 may be selected according to the design size of the originating well 410 at the construction site, so that the first left-line shield section 210 and the first right-line shield section 310 can enter the originating well 410. Of course, the left-line shield machine 200 can also be directly split into the first left-line shield segment 210 from the shield body to the trolley No. 1, the rest trolleys are split into the second left-line shield segment 220, and the right-line shield machine 300 can also be split according to the above setting.
It should be noted that, firstly, when the left line originating section is enough to accommodate the second left line shield segment 220, the second left line shield segment 220 is lifted down to the left line originating section as a whole. Also, the second right line shield segment 320 is moved into the right line originating interval, typically when the right line originating interval has sufficient capacity to accommodate the second right line shield segment 320. Certainly, the second left line shield segment 220 and the second right line shield segment 320 may be respectively split again, and with the initial tunneling of the first left line shield segment 210 or the first right line shield segment 310, when the space of the left line initial interval can accommodate the corresponding segment of the second left line shield segment 220, the corresponding segment is hung down into the left line initial interval until all the second left line shield segments 220 are hung down into the left line initial interval; when the space of the right line originating section can accommodate the corresponding segment of the second right line shield segment 320, move into the corresponding segment into the right line originating section until all the second right line shield segments 320 move into the right line originating section.
Second, the connecting line 400 typically includes an electric cable, a pressurized water pipe, an oil pipe, an air pipe, and the like.
Third, the connecting line 400 between the first left line shield section 210 and the second left line shield section 220 would be removed, typically when the first left line shield section 210 and the second left line shield section 220 are installed in connection within the left line originating interval. Likewise, when the first right-line shield section 310 and the second right-line shield section 320 are connected in the right-line originating interval, the connecting line 400 between the first right-line shield section 310 and the second right-line shield section 320 is removed.
Fourthly, the left line shield machine 200, the first left line shield segment 210, the second left line shield segment 220, the left line direction, the right line shield machine 300, the first right line shield segment 310, the second right line shield segment 320 and the left line and the right line in the right line direction are only used for distinguishing two opposite shield lines in the bidirectional shield, in practice, the left line and the right line can be interchanged according to the difference of the reference position, and accordingly, the expressions of the left line and the right line in the above features and steps can be interchanged. The same applies to the following description, which is not repeated.
In the bidirectional shield starting method provided by the embodiment of the invention, the first left line shield segment 210 is firstly hung downwards into the starting well 410 and is started and tunneled in the left line direction. When the first left line shield segment 210 starts to tunnel to form a certain left line starting section, the second left line shield segment 220 is lifted downwards to the left line starting section to be connected with the first left line shield segment 210 in an installing mode to form the left line shield machine 200, and at the moment, the shield in the left line direction is started to tunnel, so that the shield tunneling can be normally carried out. When the left-line shield machine 200 tunnels a length towards the left line direction to form a left-line tunneling section, the first right-line shield segment 310 and the second right-line shield segment 320 are lifted downwards into the left-line tunneling section. Then, the first right shield segment 310 is utilized to perform initial tunneling towards the right direction, and after the first right shield segment 310 performs initial tunneling to form a certain right initial interval, the second right shield segment 320 is moved into the right initial interval to be installed and connected with the first right shield segment 310, so as to form the right shield machine 300, thereby completing the bidirectional shield initiation in the unified narrow initial well 410. The first left line shield segment 210 and the second left line shield segment 220 are connected by a connecting pipeline 400, the first left line shield segment 210 and the second left line shield segment 220 can be connected to form the left line shield machine 200 without installation by using the connecting pipeline 400, and when a certain distance exists between the left line shield machine and the left line shield segment, the second left line shield machine 200 can provide energy and material supply and other functions for the first left line shield segment 210 through the connecting pipeline 400, so that the first left line shield segment 210 with shorter length can independently enter the originating well 410 with smaller size to perform originating tunneling in the left line direction. Similarly, the first right shield segment 310 and the second right shield segment 320 are connected by the connecting pipeline 400, so that the first right shield segment 310 can independently perform right-line direction starting tunneling, and the situation that waste materials and the like generated by left-line tunneling and right-line tunneling cannot be transported out of the starting well 410 due to the fact that the starting well 410 is blocked by the second right shield segment 320 is avoided. By using the method, bidirectional shield launching can be realized in the same narrow launching well 410, so that the continuity and the shield efficiency of the bidirectional shield are improved.
Optionally, the second left line shield segment 220 comprises a plurality of segments connected in series with each other by connecting lines 400; step 120 of hoisting the second left line shield segment 220 to the left line starting section, and installing and connecting the second left line shield segment with the first left line shield segment 210 to form the left line shield machine 200 includes:
step 121: the segments of the second left line shield segment 220 are sequentially hung down to the left line starting section and are connected with the segments of the first left line shield segment 210 or the previous second left line shield segment 220 which are connected with the left line starting section through the connecting pipeline 400, and when all the segments of the second left line shield segment 220 are hung down to the left line starting section, the first left line shield segment 210 and the second left line shield segment 220 form the left line shield machine 200.
When the length of the connecting line 400 is short, the second left-line shield segment 220 may be further split and the segments may be connected to each other in series in the installation order. When the space of the left line starting interval can accommodate one segment of the second left line shield segment 220, one segment is hung downwards to the left line starting interval, and so on until all segments of the second left line shield segment 220 are hung downwards to the left line starting interval. Through the arrangement, the first left line shield segment 210 can be suspended from the second left line shield segment 220 in segments without completely starting to dig until the length of the left line starting section is greater than or equal to the length of the second left line shield segment 220, so that the situation that the first left line shield segment 210 cannot continuously start to dig due to the fact that the length of the connecting pipeline 400 between the first left line shield segment 210 and the second left line shield segment 220 is insufficient when the distance interval between the first left line shield segment 210 and the second left line shield segment 220 is relatively long is avoided.
Optionally, the second right line shield segment 320 comprises a plurality of segments connected in series with each other by connecting lines 400; step 160, moving the second right-line shield segment 320 into the right-line originating zone, and installing and connecting the second right-line shield segment with the first right-line shield segment 310, so as to form a right-line shield machine 300 which tunnels towards the right-line direction, including:
step 161: the segments of the second right shield segment 320 are sequentially moved into the right originating section and are installed and connected with the segments of the first right shield segment 310 or the previous second right shield segment 320 which are located in the right originating section and connected with the segments through the connecting pipeline 400, and when all the segments of the second right shield segment 320 are moved into the right originating section, the first right shield segment 310 and the second right shield segment 320 form the right shield machine 300 to tunnel in the right direction.
When the length of the connecting line 400 is short, the second right-line shield segment 320 may be further split and the segments may be connected to each other in series in the installation order. When the space of the right line starting section can accommodate one segment of the second right line shield segment 320, the right line shield segment is moved into a segment to the right line starting section, and so on until all segments of the second right line shield segment 320 are moved into the left line starting section. Through the arrangement, the first right line shield segment 310 can be suspended from the second right line shield segment 320 in segments without completely starting to drive the second right line shield segment 320 by the length of the right line starting section which is greater than or equal to the length of the second right line shield segment 320, so that the situation that the first right line shield segment 310 cannot continuously start to drive due to the fact that the length of the connecting pipeline 400 between the first right line shield segment 310 and the second right line shield segment 320 is insufficient when the distance interval between the first right line shield segment 310 and the second right line shield segment 320 is relatively long is avoided.
Optionally, the step 120 of hoisting the second left-line shield segment 220 down to the left-line starting section and installing and connecting the second left-line shield segment with the first left-line shield segment 210 to form the left-line shield tunneling machine 200 includes:
step 122: the trolleys of the second left line shield segment 220 are sequentially hung downwards from the head end to the tail end of the second left line shield segment 220 to the starting well 410, moved into a left line starting section, and sequentially connected in series with the trolleys of the first left line shield segment 210 and the second left line shield segment 220 to form the left line shield machine 200.
Generally, since the second left-line shield segment 220 has a long length and cannot directly enter the originating well 410, when the space of the left-line originating interval is enough to accommodate the entire second left-line shield segment 220, the left-line shield machine 200 can be constructed by sequentially hanging the second left-line shield segment 220 in the originating well 410 and moving the second left-line shield segment into the left-line originating interval in a trolley-by-trolley manner, and sequentially installing trolleys of the first left-line shield segment 210 and the second left-line shield segment 220 in series in the left-line originating interval. Of course, in the embodiment of the present invention, the number of trolleys of the second left line shield segment 220 which are lifted down once and moved into the left line originating section can be determined according to the actual size of the originating well 410 (i.e. as long as the total length of the trolleys lifted down once is smaller than the size of the originating well 410).
Optionally, the step 140 of hoisting the first right-line shield segment 310 and the second right-line shield segment 320 down into the left-line excavation interval includes:
step 141: the trolley and the shield body of the second left line shield segment 220 and the trolley and the shield body of the first left line shield segment 210 are sequentially hung downwards from the tail end of the second right line shield segment 320 to the shield body of the first right line shield segment 310, and are moved into the left line tunneling section.
Generally, since the total length of the first right shield segment 310 and the second right shield segment 320 is much larger than the size of the originating well 410, when the space of the left tunneling section is enough to accommodate the first right shield segment 310 and the second right shield segment 320, the second right shield segment 320 and the first right shield segment 310 can be sequentially hoisted down into the originating well 410 and moved into the left tunneling section by trolley unit, and finally the shield body at the head end of the first right shield segment 310 is hoisted down into the originating well 410 and moved into the left tunneling section. In the left line driving section, the trolleys of the second right line shield segment 320 are connected in series in sequence, the trolleys and the shield bodies of the first right line shield segment 310 are connected in series in sequence, and the first right line shield segment 310 and the second right line shield segment 320 are connected through the connecting pipeline 400. Of course, in the embodiment of the present invention, similar to the second left-line shield segment 220 being hung down to the left-line starting interval, the number of trolleys for hanging down the second right-line shield segment 320 at a time may also be determined according to the actual size of the starting well 410, so as to improve the efficiency of hanging down the first right-line shield segment 310 and the second right-line shield segment 320 to the left-line heading interval.
Optionally, before step 110 of hoisting the first left line shield segment 210 down into the originating well 410 and initiating a heading in a left line direction to form a left line originating interval, the method further comprises: step 170: an origination station 420 (shown in connection with FIG. 2) is located at the bottom of origination well 410.
The provision of the origination station 420 at the bottom of the origination well 410 enables the first left line shield section 210 and the second right line shield section 320 to more smoothly initiate the heading in the origination well 410 in the left and right directions, respectively.
Optionally, step 110 is to hang down the first left line shield segment 210 into the originating well 410, and start tunneling in the left line direction to form a left line originating zone, which includes, in conjunction with fig. 2:
step 111: placing a left wire steel sleeve 430 at the wall of the well where originating well 410 is in contact with the shield of first left wire shield section 210;
step 112: the first left line shield section 210 is hoisted down to the originating well 410 and moved into the left line steel sleeve 430;
step 113: the first left line shield segment 210 initiates a drive in the direction of the left line to form a left line initiation interval.
The left line steel sleeve 430 is arranged on the well wall of the originating well 410, which is in contact with the shield body of the first left line shield section 210, so that the first left line shield section 210 can realize sealed origination in cooperation with the left line shield section to avoid water and soil from flowing into the working surface from the gap of the opening to cause the collapse of the soil body of the working surface. Typically, a reaction frame 440 is also provided on the left-hand steel casing 430 on the side away from the borehole wall to provide support for the first left-hand shield section 210 in its leftward direction to initiate the drive.
Optionally, before the step 120 of hoisting the second left-line shield segment 220 down to the left-line starting section and installing and connecting with the first left-line shield segment 210 to form the left-line shield machine 200, the method further includes: step 180: the left wire steel sleeve 430 is removed.
The removal of the left wire steel sleeve 430 before step 120 can avoid the left wire steel sleeve 430 from obstructing the operation of the second left wire shield segment 220 to hang down to the left wire originating section.
Optionally, in step 140, the first right-line shield segment 310 and the second right-line shield segment 320 are hoisted downwards into the left-line heading interval, which includes, in combination with fig. 6 and 7:
step 142: setting a right wire steel sleeve 450 at the wall of the well where the originating well 410 is in contact with the shield of the first right wire shield section 310;
step 143: the first right wire shield section 310 and the second right wire shield section 320 are hoisted down into the left wire driving interval and the first right wire shield section 310 is moved into the right wire steel sleeve 450.
The right-line steel sleeve 450 is arranged on the well wall of the originating well 410, which is in contact with the shield body of the first right-line shield segment 310, so that the first right-line shield segment 310 can realize sealed origination in cooperation with the right-line shield segment, and therefore soil and water can be prevented from flowing into the working surface from the gap of the cave entrance and causing the collapse of the soil body of the working surface. Typically, a reaction frame 440 is also provided on the right wire steel sleeve 450 on the side away from the borehole wall to provide a backup force for the first right wire shield section 310 to initiate its excavation in the direction of the right wire.
Optionally, before the step 160 moves the second right-line shield segment 320 into the right-line starting interval and connects with the first right-line shield segment 310 to form the right-line shield machine 300 to drive in the right-line direction, the method further includes: step 190 removes the right wire steel sleeve 450.
Removal of the left steel wire sleeve 430 before step 160 avoids the right steel wire sleeve 450 from obstructing the movement of the second right wire shield section 320 into the right wire initiation interval.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A bi-directional shield launching method, comprising:
the first left line shield is lifted into an originating well in a segmented mode, and tunneling starts towards the left line direction to form a left line originating interval;
a second left line shield segment is hoisted downwards to the left line starting interval and is installed and connected with the first left line shield segment to form a left line shield machine;
the left line shield machine tunnels towards the left line direction to form a left line tunneling section;
when the length of the left line tunneling section is greater than or equal to the total length of a first right line shield segment and a second right line shield segment, the first right line shield segment and the second right line shield segment are lifted downwards into the left line tunneling section;
the first right shield segment starts tunneling towards the right direction to form a right starting interval;
moving the second right line shield segment into the right line starting interval and connecting the second right line shield segment with the first right line shield segment in an installing manner so as to form a right line shield tunneling machine to tunnel towards the right line direction;
the tail end of the first left line shield segment is connected with the head end of the second left line shield segment through a connecting pipeline; the tail end of the first right-line shield segment is connected with the head end of the second right-line shield segment through a connecting pipeline; the first left line shield segment and the first right line shield segment both use a shield body as a head end.
2. The bidirectional shield launching method of claim 1, wherein said second left line shield segment comprises a plurality of segments connected to one another in series by connecting lines; the step of hoisting the second left line shield segment to the left line starting section and connecting the second left line shield segment with the first left line shield segment to form a left line shield machine comprises:
and sequentially hoisting the sections of the second left line shield segment downwards to the left line starting interval, and installing and connecting the sections of the first left line shield segment or the previous second left line shield segment which is positioned in the left line starting interval and connected with the sections of the first left line shield segment or the previous second left line shield segment through a connecting pipeline, wherein when all the sections of the second left line shield segment are hoisted downwards to the left line starting interval, the first left line shield segment and the second left line shield segment form the left line shield machine.
3. The bidirectional shield launching method of claim 1 or 2, wherein said second right-line shield segment comprises a plurality of segments connected to each other in series by connecting lines; moving the second right shield segment into the right originating zone, and connecting the second right shield segment with the first right shield segment in an installing manner to form a right shield tunneling machine which tunnels towards the right direction, wherein the right shield tunneling machine comprises:
and sequentially moving the segments of the second right line shield segment into the right line starting interval, and installing and connecting the segments of the first right line shield segment or the previous second right line shield segment which is positioned in the right line starting interval and connected with the segments of the first right line shield segment or the previous second right line shield segment through a connecting pipeline, wherein when all the segments of the second right line shield segment are moved into the right line starting interval, the first right line shield segment and the second right line shield segment form the right line shield machine.
4. The bidirectional shield launching method of claim 1, wherein said hoisting down the second left line shield segment to the left line launching zone and into installed connection with the first left line shield segment to form a left line shield machine comprises:
and sequentially hanging the trolleys of the second left line shield segment from the head end to the tail end of the second left line shield segment to the starting well, moving the trolleys into the left line starting interval, and sequentially connecting the trolleys of the first left line shield segment and the second left line shield segment in series to form a left line shield machine.
5. The bidirectional shield launching method of claim 1, wherein said hoisting down the first right-line shield segment and the second right-line shield segment into the left-line driving interval comprises:
and sequentially and downwards hanging the trolleys and the shields of the second left line shield segment and the first left line shield segment from the tail end of the second right line shield segment to the shield of the first right line shield segment, and moving the trolleys and the shields into the left line tunneling section.
6. The bidirectional shield launching method of claim 1, wherein prior to said hoisting said first left line shield segment down into the launching well and initiating a drive in a leftward direction to form a left line launching interval, the method further comprises:
an origination station is disposed at a bottom of the origination well.
7. The bidirectional shield launching method of claim 1, wherein said hoisting said first left line shield segment down into a launching well, initiating a drive in a left line direction to form a left line launching interval comprises:
arranging a left line steel sleeve on a well wall of the originating well, which is in contact with the shield body of the first left line shield segment;
hoisting the first left line shield segment to the originating well, and moving the first left line shield segment into the left line steel sleeve;
and the first left line shield segment starts tunneling towards the left line direction to form a left line starting section.
8. The bidirectional shield launching method of claim 7, wherein prior to said hoisting said second left line shield segment down to said left line launching zone and into erection connection with said first left line shield segment to form a left line shield machine, the method further comprises:
and removing the left wire steel sleeve.
9. The bidirectional shield launching method of claim 1, wherein said hoisting down the first right-line shield segment and the second right-line shield segment into the left-line driving interval comprises:
arranging a right-line steel sleeve on a well wall of the originating well, which is in contact with the shield body of the first right-line shield segment;
and hoisting the first right line shield segment and the second right line shield segment downwards into the left line tunneling section, and moving the first right line shield segment into the right line steel sleeve.
10. The bidirectional shield launching method of claim 9, wherein said moving said second right line shield segment into said right line launching zone and into installed connection with said first right line shield segment to form a right line shield machine before it tunnels in a right line direction, the method further comprises:
and removing the right wire steel sleeve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910603282.7A CN110185458B (en) | 2019-07-04 | 2019-07-04 | Bidirectional shield launching method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910603282.7A CN110185458B (en) | 2019-07-04 | 2019-07-04 | Bidirectional shield launching method |
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| CN110185458B true CN110185458B (en) | 2020-12-22 |
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| CN103711499A (en) * | 2014-01-08 | 2014-04-09 | 中铁十三局集团第六工程有限公司 | Shield tunneling machine split starting construction method |
| CN104929650B (en) * | 2015-05-28 | 2017-11-03 | 中建一局集团第五建筑有限公司 | A kind of overall originating method in shield machine underground |
| CN105298503B (en) * | 2015-09-16 | 2017-12-19 | 中铁十局集团第三建设有限公司 | Small space shield machine separate launching construction method |
| CN108952733A (en) * | 2017-05-17 | 2018-12-07 | 沈阳市政集团有限公司 | Separate launching shield technique application construction method in municipal sewerage engineering |
| CN108131148B (en) * | 2018-01-22 | 2019-07-16 | 中交第二航务工程局有限公司 | Extra small starting well shield separate launching construction method |
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